表 4.

唑虫酯及氧化产物异构体在蕹菜中的加标回收率

Analyte	Spiked level/ (μg/kg)	Intra-day (n=3)								Inter-day RSD/% (n=9)
		Day 1			Day 2			Day 3
		Recovery/%	RSD/%		Recovery/%	RSD/%		Recovery/%	RSD/%
RS-Pyr	0.25	101.1	1.6		105.7	5.0		96.3	5.1	4.6
	5	98.8	1.2		104.9	2.2		102.8	7.2	3.0
	100	107.8	1.8		108.5	2.0		105.5	3.6	1.5
SS-Pyr	0.25	100.0	9.4		96.5	1.9		90.2	1.4	5.2
	5	99.9	4.5		94.5	3.0		94.2	8.0	3.3
	100	103.6	0.7		99.5	2.0		95.3	2.7	4.2
RR-Pyr	0.25	104.1	6.0		105.8	8.7		101.1	3.2	2.3
	5	98.2	4.4		95.4	3.2		97.1	7.6	1.5
	100	109.5	1.4		97.6	1.2		98.1	1.2	6.6
SR-Pyr	0.25	108.8	8.3		100.9	6.6		108.2	8.0	4.1
	5	103.4	1.9		105.0	1.7		109.9	6.1	3.2
	100	108.3	0.7		106.6	2.5		106.3	1.8	1.0
S-(Pyr+O)	0.5	72.6	5.2		83.3	2.0		76.4	2.7	7.0
	10	84.3	3.2		88.1	4.5		89.2	2.9	3.0
	200	88.1	2.4		91.2	0.6		90.6	0.8	1.8
R-(Pyr+O)	0.5	91.7	8.4		83.9	3.5		77.1	2.7	8.6
	10	84.9	4.3		80.9	3.4		83.6	2.2	2.4
	200	88.7	2.0		83.3	0.5		92.8	1.6	5.4